Refrigerator.



No. 810,499. PATENTED JAN. 23, 1906.

0. MQDONNER. REFRIGERATOR.

APPLICATION FILED MAR. 31, 1905.

PATENTED JAN. 23, 1906.

C. MGDONNER. REFRIGERATOR. APPLICATION FILED MAR.31,1905.

2 SHEETSSHEET 2.

UNITED STATES PATENT OFFICE. CHARLEY MoDONNER, OF MANITOWOG, WISCONSIN, ASSIGNOR OF .ONE-THIRD TO JOSEPH J. ROEMER AND ONE-THIRD TO CHARLES AHLGRIM, OF MANITOWOC, WISCONSIN.

REFRIGERATOR- Specification of Letters Patent.

Patented Jan. 23, 1906.

Application filed March 31, 1905. Serial No. 253,079.

To (all whom it may concern.-

Be it known that 'I, CHARLEY MODONNER, a citizen of the United States, residing at Manitowoc, in the county of Manitowoc and State of Wisconsin, have invented'a new and useful Refrigerator, of which the following is a specification.

The invention relates to improvements in refrigerators.

The object of the present invention is to'improve the construction of refrigerators, more especially the construction of the ice-chamber, and to provide a simple and comparatively inexpensive ice box or chest which will be removable from a refrigerator to enable it to be filled and cleaned outside a, house or any convenient place to prevent the floor of the room or apartment in which the refrigerator is placed from being wet by the ice and also to prevent sawdust from dropping from the ice upon the floor.

A further object of the invention is to' provide an-ice box or chestof. this characteradapted to preserve the ice contained within it and reduce the melting thereof to a minimum and at'the same time afford a freecirculation of cold air throughout the refrigerator.

With. these and other objects in view the invention consists in the construction and novel combination and arrangement of parts hereinafter fully described, illustrated in the an ice box'or chest constructed in accordance- With this invention. Fig. 2 1s a vertical sec-v tional view of the same taken substantially on the line 2 2 of Fig. 1. Fig. 3 is a horizontal sectional view on the line 3 3 of Fig. 2. Fig. 4 is a perspective view of the removable ice box or chest. F ig. 5 is a detail perspective view of the corrugated ice support or tray. Fig. 6 is a similar view of the removable door of the ice box or chest.

Like numerals of reference designate corresponding parts in all the figures of the drawings.

1 designates a removable ice box or chest, supported within a refrigerator 2 by horizontal bars 3 and 4:. the bars 3 forming guides for the ice box or chest to permit the latter to slide in and out of the refrigerator. The refrigerator, which may be constructed in any preferredinanner, is provided at the front with a door 5 to permit the ice box or chest to be removed from and replaced in the refrigerator; but the ice box or chest may be introduced at any other desired point, as will be readily understood. The ice box or chest is provided at the front with an opening to receive a removable door 6, and the body portion of the ice box or chest is composed of inner and outer shells 7 and 8, spaced apart to provide an intervening cold-air space and forming inner and outer walls at the sides, back, and top of the ice box or chest. The inner and outer shells are constructed of zinc or other suitable material, and the inner shell is composed of a top, bottom, sides, and back. The outer shell is provided with a top, sides, and back, a wood filler 9 being preferably provided at the bottom to strengthen the latter and to enable the ice box or chest to receive a large amount of ice without being injured by the weight of the same. Asheet or layer 10 of asbestos or other non-heat-conducting material is interposed between the wood filler and the sheet-metal bottom of the inner shell. Inner and outer linings 11 and 12, of asbestos or similar material, arelocated within the coldair space or chamber 13, and are arranged on the inner and outer shells, as clearly indicated in Figs. 1, 2, and 3 of the drawings. These asbestos linings, which are adapted to exclude heat from the ice-chamber 14:, also operate to absorb any moisture on the zinc shells, and thereby tend to prevent rust. The inner and outer shells are braced at intervals by bars 15, arranged at the top, sides, and back of the ice box or chest and interposed between" the inner and outer linings, and provided at intervals with openings 16 to permit a partialcirculation of air throughout the cold-air space or chamber 13, which surroundsthe ice-chamber 14:, due to charging the air space or chamber with compressed air and also to changes in temperature. ranged at one side of the inner shell near the bottom and front of the ice box or chest, as clearly shown in Fig. 1 of the drawings, and

A valved air-inlet 17 is arthis valved inlet, whichis provided with a suitable nipple, is adapted to receive the tube or pipe of an air-pump for enabling air under pressure to be introduced into the air space or chamber 13. The temperature of the air within the air space or chamber 13 is reduced by the ice within the ice-receptacle, and when it becomes chilled it will operate to preserve the ice and to reduce the melting thereof to a minimum. The ice is supported by a corrugated tray or false bottom 18, the corrugations forming grooves or gutters for the water resulting from the melting of the ice and also ,serving to hold the ice permanently out of contact with such water to prevent the latter from melting the ice rapidly. The corrugated ice-supporting tray or false bottom is supported at intervals by cleats or bars 19 and is removable to permit me be readily cleaned. The cleats .or bars 19 space the corrugated tray or false bottom from the bottom of the inner shell and provide air spaces or chambers, the bars or cleats terminating short of the front and back of the ice box or chest to permit a free circulation of the cold air; but openings may be provided to permit the air to pass directly from one space 20 to another.

The bottom of the ice box orchest is provided with a central oblong opening 21, in which is arranged a tubular, frame or conduit 4 having vertical sides and ends and forming located at the back .thereof.

walls or linings for the bottom opening. The tubular frame or conduit projects above the bottom of'the ice box or chest to prevent any water from flowing through the bottom opening into the provision-chamber 22 of the refrigerator. A drain pipe or tube 23 depends from the bottom of the ice box or chest and is In practice a slight inclination may be given the bottom of the inner shell for directing the water to the tube or pipe 23. The drain pipe or tube 23 extends only a short distance below the ice box or chest, and'when the latter is in position within the refrigerator the lower end of the short drain pipe or tube 23 is located in alinement with an enlarged end 24 of a fixed pipe or tube 25, which extends through the bottom ofthe refrigerator. A plurality of drain-tubes may be provided, if desired.

The door 6' is preferably constructed of wood, and it'is provided at its inner face with a projecting portion 26, which fits within the opening and the front'of the ice box or chest. A lining 27, of zinc or other suitable material, is secured to the projecting portion 26, and a layer 28 of asbestos is interposed between the lining 27 and the projecting portion 26, which is preferably constructed of wood.

It will be seen that the icebox or chest is exceedingly simple and inexpensive in construction, thatit is adapted to be readily placed in and removed from a refrigerator, and that it prevents water and sawdust from dropping upon the floor of the room in which the refrigerator is placed, as it enables the ice box or chest to be filled and cleaned outside the same.

It will also be clear that it is adapted to reduce pressure, absorbent non-heat-conducting lin-' ings located within the said cold-air space and arranged on the said shells, and bars interposed between the shells and retaining the said linings in place and provided with openings to permit a circulation due to changes in temperature and also to enable the entire :cold -air space to be charged with air under pressure.

In testimony that I claim the foregoing as my own I have hereto afixed my signature in the presence of two witnesses.

, CHARLEY MGDONNER. Witnesses:

MARTHA SIEK R, CLYDE H. SEDGWIOK. 

